Electric fire detection switches with thermal glass bulb or fusible link, wall mounting
Fire detection in buildings. This device operates electrical contacts for remote alarm and simultaneous control of electrical servo-controls such as electric cylinders, electric motors or solenoids, for opening or closing air conditioning dampers, doors, sunroofs, and openings in exterior building walls.
| Contact Material | |
|---|---|
| Contact style | |
| Voltage | |
| Electrical rating | |
| Release temperature (°C) | |
| Ingress protection | |
| Mechanical protection |
Applications
Fire detection in buildings. This device operates electrical contacts for remote alarm and simultaneous control of electrical servo-controls such as electric cylinders, electric motors or solenoids, for opening or closing air conditioning dampers, doors, sunroofs, and openings in exterior building walls.
Main Features
Thermal sensitive part: Thermo-breakable bulb or eutectic alloy link.
Operation: The break of the bulb or the melting of the fusible link activates, by means of a ceramic pusher, an electric switch.
Mounting: Enclosure with 4 removable legs, allowing mounting on the wall or ceiling. If the mounting is done on a particular board, removing the 4 legs on the back provides access to 4 M4 threads available for this purpose.
Orientation: The temperature-sensitive part (glass bulb or fusible link) is mounted on a stainless-steel support that can be rotated every 90° to position it in the most favourable direction to the air flow.
Electrical contact: Double snap action contact with two independent circuits, one normally open and the other normally closed. Total contact spacing is larger than 3mm, providing full disconnection upon IEC standards.
Electrical rating: 16A (4A) 250VAC; 10A (1A) 400VAC; 4A (100mA) 24 and 48VDC. Compatible with electric door magnets in 24V and 48V, 500 N.
(Version with gold plated contacts for low level electronic circuits available on request).
Enclosure: 70 x 80 x 45mm in UV resistant black PA66, with captive lid screws in stainless steel.
- Flammability: UL94V0 and GWFI 960°C.
- Deformation temperature under load: 225°C. (ISO 75-2, 1.8 MPa).
- Ambient temperature class T150°C.
- Resistance to corrosion better than 1000 hours in salt spray fog at 5%.
- Ingress resistance: The highest class, IP69K (washable at high pressure hot water cleaner).
- Impact resistance: The highest class, IK10 (except stainless steel support for temperature-sensitive parts and glass bulbs).
Electrical connection: On screw terminal block, 7 terminals 2.5mm². Shipped with a 3-way shunt and a 2-way shunt, allowing different contact and connection arrangement solutions. Cable outlet by two M16 cable glands.
Maintenance:
- Replacement of the temperature-sensitive part can be made without tools
- A test button (option) accessible from the outside allows to check instantly the operation of the switch without any disassembly or
- The enclosure has holes for the installation of seals preventing unauthorized
- Temperature sensitive parts may also be sealed to prevent unauthorized
Visualization: Optional 230 V, 24V or 48V pilot light. This pilot light can be used to visualize the presence of voltage on the line, a critical parameter for “contact closes on fire” detection systems.
Rod type sensor: This device, in the thermal bulb version, is also available with a rod-type sensor for wall- mounted air duct use (see type 59A8).
Other options: Customization and customer labelling. Output by a single cable gland.
Wiring diagrams
| Contact opens when the device triggers. |  |
| Wiring in serial of devices whose contact opens when the device triggers. |  |
| Contact opens circuit 1 when the device triggers, and closes circuit 2 for alarm. The 2 circuits may have different voltages. |  |
| Contact closes when the device triggers. |  |
| Wiring in serial of devices whose contact closes when the device triggers. |  |
| Contact closes when the device triggers, with pilot light showing that power supply is on. |  |
| Connection in parallel of many devices with contact closes when the device triggers, with pilot light showing that power supply is on. |  |
| Serial connection of open on trigger contact (Circuit 1) and in parallel of close on trigger contact (Circuit 2). The 2 circuits may have different voltages. |  |
| Connection of many devices in serial of open on trigger contacts (Circuit 1) and in parallel of close on trigger contacts (Circuit 2). The 2 circuits may have different voltages. |  |
| Serial connection of open on trigger contact (Circuit 1) and in parallel of close on trigger contact (Circuit 2), with pilot light on circuit 2 showing that power supply is on. The 2 circuits may have different voltages. |  |
| Connection of many devices in serial of open on trigger contacts (Circuit 1) and in parallel of close on trigger contacts (Circuit 2), with pilot light on circuit 2 showing that power supply is on. (The 2 circuits may have different voltages). |  |
Main references
Spare parts references*
| Thermal glass bulbs for 59A7 (Packing units 50 and 250p) | Eutectic alloy fusible links for 59B7 (Packing units 50 and 250p) | ||||||||
 |
57°C (135°F) |
6658GBB057 |
 |
70°C (158°F),
non RoHS alloy |
5E6070H080000000 |
||||
| 68°C (155°F) |
6658GBB068 |
72°C (162°F),
RoHS alloy |
5E6072H080R00000 |
||||||
|
79°C (174°F) |
6658GBB079 |
92°C (198°F),
non RoHS alloy |
5E6072H092000000 |
||||||
|
93°C (199°F) |
6658GBB093 |
96°C (205°F),
non RoHS alloy |
5E6072H096000000 |
||||||
| 141°C (286°F) |
6658GBB141 |
138°C (280°F),
RoHS Alloy |
5E6072H138R00000 |
||||||
* Maintenance or replacement of thermal bulbs or fusible links must be made by specially trained personnel and in accordance with our technical instructions.
Downloads
Datasheets
Drawings
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FIRE DETECTION
